US20120022461A1 - Tiltable safety needle - Google Patents
Tiltable safety needle Download PDFInfo
- Publication number
- US20120022461A1 US20120022461A1 US13/139,420 US200913139420A US2012022461A1 US 20120022461 A1 US20120022461 A1 US 20120022461A1 US 200913139420 A US200913139420 A US 200913139420A US 2012022461 A1 US2012022461 A1 US 2012022461A1
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- US
- United States
- Prior art keywords
- needle
- needle assembly
- drug delivery
- delivery device
- hub
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
- A61M5/321—Means for protection against accidental injuries by used needles
- A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
- A61M5/3257—Semi-automatic sleeve extension, i.e. in which triggering of the sleeve extension requires a deliberate action by the user, e.g. manual release of spring-biased extension means
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
- A61M5/321—Means for protection against accidental injuries by used needles
- A61M5/322—Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston
- A61M5/3221—Constructional features thereof, e.g. to improve manipulation or functioning
- A61M2005/3223—Means impeding or disabling repositioning of used needles at the syringe nozzle
- A61M2005/3224—Means to disalign the needle tip and syringe nozzle
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
- A61M5/321—Means for protection against accidental injuries by used needles
- A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
- A61M5/3245—Constructional features thereof, e.g. to improve manipulation or functioning
- A61M2005/3247—Means to impede repositioning of protection sleeve from needle covering to needle uncovering position
- A61M2005/3249—Means to disalign the needle tip and the distal needle passage of a needle protection sleeve
Definitions
- the invention relates to a needle assembly having a shielded needle cannula and especially a pen needle assembly where both ends of the needle cannula are secured after use.
- pen injectors People suffering from diabetes have to inject themselves with insulin at a daily basis. For this purpose a great number of different pen systems have been developed over the last 30 years.
- pen injectors In order to transfer the liquid drug from the injection pen and into the body of the patient a pen needle assembly is used.
- Such pen-needle assemblies have a needle cannula with a non-injection end which penetrates into the cartridge when the pen needle assembly is attached to the injection pen and a patient end that enters into the body of the patient during injection to create a liquid communication between the inner of the cartridge and the patient.
- a pen needle assembly further comprises a hub carrying the cannula and which hub is usually provided with means for attaching the pen needle assembly to the injection pen.
- Such pen needle assemblies are typically disposable and are discarded after one single use.
- the problem presented by the disposal of a pen needle assembly, and indeed, by any handling of the pen needle assembly, is the potential risk of being injured by any of the sharp ends of the needle cannula. This is particular dangerous when following after the penetration of a patients skin since the needle cannula then may be contaminated and therefore capable of spreading diseases such as hepatitis and HIV.
- a common feature with all these known pen needle assemblies is however that the non-injection end of the needle cannula is not concealed but has its sharp point located only a few millimetres below the edge of the skirt surrounding the non-injection end.
- the distance between the sharp point of the non-injection end of the needle cannula and the edge of the hub must be very little in order for the non-injection end of the needle to penetrate properly into the cartridge when the hub is attached to an injection pen. This relatively short distance can result in accidental needle stick injuries. This is especially possible if the person handling the used needle assembly has small fingers that can be squeezed into the area within the skirt of the hub e.g. when returning the needle assembly to the outer container after use.
- the patient end of the needle cannula points straight forward along the centre axis of the needle assembly.
- the needle assembly is ready for use and the shield can slide parallel to the needle cannula.
- the needle cannula is moved to a second position wherein the needle cannula is not parallel aligned with the centre axis (x) and in which position the shield prevents exposure of the tip of the needle cannula ( 20 ) while the patient end of the needle cannula blocks the axial movement of the shield.
- the non-patient end is also deflected. In its deflected position the sharp end is pushed against the skirt of the hub thereby rendering it impossible—or at least very difficult—to be injured by the sharp end of the non-patient end.
- the hub could alternatively be provided with a radial extension into which the non-patient end collapses.
- the needle cannula is preferably mounted, e.g. by gluing, to an attachment part which is connected to a bridging part suspended over the hub.
- the bridging part is firmly attached to the hub at one end while the other end is free-floating.
- the bridging part is preferably moulded as an integral part of the hub but could also be a separate part attached to the hub.
- This free floating end of the bridging portion is preferably supported by a part of the hub which can be moved out of engagement with the free floating end of the bridging part in which situation the bridge would collapse resulting in a deflection of the needle cannula.
- the part of the hub which supports the free floating end of the bridging portion is preferably a radially movable part of the hub. It can be embodied as a tooth or a cut-out in the skirt of the hub and only being proximally connected to the hub, or it can be embodied as an insert in the hub.
- the function is that it supports the free floating end of the bridging portion when the needle assembly is not attached to the injection device but is automatically shifted out of engagement with the free floating end once the needle assembly is attached to any injection device.
- the release part could also be a part that requires the user to actuate it.
- the bridging part In order to enhance the collapse of the bridging part it is preferably provided with a film hinge or a similar mechanism that weakens the structure.
- a spring which urges the bridging part in the direction of the collapse which is preferably the proximal direction.
- a spring which urges the shield in the distal direction.
- This spring is preferably provided between the shield and the bridging portion of the hub such that the same spring urges the shield in the distal direction and applies a pressure on the bridging portion enhancing the collapse once the free floating end is set free.
- the free floating end of the bridging structure of the hub is no longer supported which makes it collapse. Since the part of the bridging structure opposite the free floating part is secured to the hub, the bridge with its attachment part will tilt. The needle cannula which is secured to the attachment part will also tilt whereby the patient end of the needle cannula will be deflected away form the centre axis and the non-patient end will be deflected away in the opposite direction.
- the sharp end of the non-patient end will abut the inside wall of the skirt of the hub while the sharp part of the patient end will be positioned inside the shield thereby preventing axial movement of the shield.
- injection pen is typically an injection apparatus having an oblong or elongated shape somewhat like a pen for writing. Although such pens usually have a tubular cross-section, they could easily have a different cross-section such as triangular, rectangular or square or any variation around these geometries.
- drug is meant to encompass any drug-containing flowable medicine capable of being passed through a delivery means such as a hollow needle in a controlled manner, such as a liquid, solution, gel or fine suspension.
- a delivery means such as a hollow needle in a controlled manner, such as a liquid, solution, gel or fine suspension.
- Representative drugs includes pharmaceuticals such as peptides, proteins (e.g. insulin, insulin analogues and C-peptide), and hormones, biologically derived or active agents, hormonal and gene based agents, nutritional formulas and other substances in both solid (dispensed) or liquid form.
- subcutaneous injection is meant to encompass any method of transcutaneous delivery to a subject.
- needle Cannula is used to describe the actual conduit performing the penetration of the skin during injection.
- a needle cannula is usually made from a metallic material and connected to a hub to form a complete injection needle also often referred to as a “needle assembly”.
- a needle cannula could however also be made from a polymeric material or a glass material.
- the needle cannula is mounted in a “hub”, which also carries the connecting means for connecting the injection needle to an injection apparatus and is usually moulded from a suitable thermoplastic material.
- the “connection means” could as examples be a luer coupling, a bayonet coupling, a threaded connection or any combination thereof e.g. a combination as described in EP 1,536,854.
- Cartridge is the term used to describe the container containing the drug. Cartridges are usually made from glass but could also moulded from any suitable polymer. A cartridge or ampoule is preferably sealed at one end by a pierceable membrane which can be pierced e.g. by the non-patient end of a needle cannula. The opposite end is typically closed by a plunger or piston made from rubber or a suitable polymer. The plunger or piston can be slidable moved inside the cartridge. The space between the pierceable membrane and the movable plunger holds the drug which is pressed out as the plunger decreased the volume of the space holding the drug. However, any kind of container—rigid or flexible—can be used to contain the drug.
- FIG. 1 Show an exploded view of the tiltable needle assembly.
- FIG. 2 Show a cross sectional view of the tiltable needle assembly prior to mounting.
- FIG. 3 show a cross sectional view of the tiltable needle cannula in its locked position after removal from the injection pen.
- FIG. 4 Show a cross sectional view of the tiltable needle assembly mounted an injection pen.
- distal end in the appended figures is meant to refer to the end of the needle cannula penetrating the patient whereas the term “proximal end” is meant to refer to the opposite end pointing away from the patient in a situation of use.
- the needle assembly disclosed in FIG. 1 comprises a needle cannula 20 which is glued to a needle hub 1 by a drop of glue 25 .
- the needle cannula 20 comprises a distal part 21 for penetrating into a patient (the patient end) and a proximal part 22 for penetrating into a cartridge 31 (the non-patient end) contained in the injection device 30 to which the needle assembly is attached.
- a tubular housing 40 Surrounding the hub 1 is a tubular housing 40 which is preferably glued or welded to the outside surface of the hub 1 .
- a safety shield 50 is axially movable inside the housing 40 and is urged in the distal direction by a spring 60 provided between the hub 1 and the shield 50 .
- the shield 50 is at its proximal end provided with a rim 51 which engages an inwardly pointing edge 41 on the housing 40 such that the shield 50 is contained within the housing 40 .
- the hub 1 comprises a number of inwardly pointing protrusions 3 located on the inside surface of a skirt 2 surrounding the proximal part 22 of the needle cannula 20 , such that the needle assembly can be attached to the injection device 30 via a bayonet interface as described in EP 1,536,854.
- a bayonet interface as described in EP 1,536,854.
- Such interface only requires the user to perform a relatively little rotation of the needle assembly relatively to the injection device 30 in order to attach the needle assembly properly.
- the hub 1 further comprises a bridge 10 which at one side is firmly attached to the hub 1 e.g. by being moulded as an integral part of the hub 1 . At the other end, approximately 180 degrees opposite from the first side, the bridge 10 terminates in a free-floating leg 11 .
- the bridge 10 carries an attachment part 12 with a through-going opening 13 , in which opening 13 the needle cannula 20 is glued 25 to the bridge 10 .
- the bridge 10 further comprises a film-hinge 14 which is preferably moulded as an integral part of the bridge 10 . Further the hub 1 and the bridge 10 is provided with a track 15 which supports the spring 60 .
- the skirt 2 of the hub 1 comprises a release part 4 which is radially movable relatively to the remaining part of the skirt 2 .
- This release part 4 supports the free-floating leg 11 of the bridge 10 at its distal end as disclosed in FIG. 2 .
- FIG. 4 discloses the needle assembly attached to the injection device 30 utilizing the bayonet interface.
- the injection device 30 supports the cartridge 31 holding the drug to be injected and is at its distal end provided with a needle mount 32 .
- This needle mount 32 has a number of axial tracks for the bayonet coupling and can either be a part of the injection device 30 or a separate part attached to the cartridge 31 .
- the release part 4 is moved radially outwardly by the needle mount 32 .
- the injection pen 30 is ready to perform the injection and the free-floating leg 11 of the bridge 10 is supported by the needle mount 32 .
Abstract
A shielded needle assembly for a drug delivery device in which a needle cannula (20) tilts once the needle assembly is removed from the drug delivery device whereby a non-patient end (22) of a needle cannula (20) abuts an inside surface of the needle hub (1) and a patient end (21) of the same needle cannula (20) blocks the axial movement of the shield (50).
Description
- The invention relates to a needle assembly having a shielded needle cannula and especially a pen needle assembly where both ends of the needle cannula are secured after use.
- People suffering from diabetes have to inject themselves with insulin at a daily basis. For this purpose a great number of different pen systems have been developed over the last 30 years. Common for pen injectors is that they contain a container or cartridge containing the liquid drug to be injected. In order to transfer the liquid drug from the injection pen and into the body of the patient a pen needle assembly is used. Such pen-needle assemblies have a needle cannula with a non-injection end which penetrates into the cartridge when the pen needle assembly is attached to the injection pen and a patient end that enters into the body of the patient during injection to create a liquid communication between the inner of the cartridge and the patient. A pen needle assembly further comprises a hub carrying the cannula and which hub is usually provided with means for attaching the pen needle assembly to the injection pen.
- Such pen needle assemblies are typically disposable and are discarded after one single use. The problem presented by the disposal of a pen needle assembly, and indeed, by any handling of the pen needle assembly, is the potential risk of being injured by any of the sharp ends of the needle cannula. This is particular dangerous when following after the penetration of a patients skin since the needle cannula then may be contaminated and therefore capable of spreading diseases such as hepatitis and HIV.
- A great number of pen needle assemblies have been developed where the patient end of the needle cannula is concealed by a spring loaded and telescopically movable shield during and after the injection. Such safety needles are e.g. known from WO 03/066141, EP 1.289.587 and in EP 1.448.256.
- A common feature with all these known pen needle assemblies is however that the non-injection end of the needle cannula is not concealed but has its sharp point located only a few millimetres below the edge of the skirt surrounding the non-injection end. The distance between the sharp point of the non-injection end of the needle cannula and the edge of the hub must be very little in order for the non-injection end of the needle to penetrate properly into the cartridge when the hub is attached to an injection pen. This relatively short distance can result in accidental needle stick injuries. This is especially possible if the person handling the used needle assembly has small fingers that can be squeezed into the area within the skirt of the hub e.g. when returning the needle assembly to the outer container after use.
- In order to protect the user from such accidentally injuries with the back-needle, a number of pen needles with back-needle protection has been suggested e.g. in WO 2008/107199 and in U.S. Pat. No. 7,384,414.
- Further, a number of safety pen needles concealing both the injection-end and the non-injection end of the needle cannula at the same time have been disclosed in US 2008/0177235, US 2008/0177237 and US 2008/0177238. These constructions are however very complicated and requires several springs in order to function.
- It is an object of the present invention to provide a needle assembly having a shielded needle cannula and wherein both the patient end and the non-patient end of the needle cannula can be secured and which needle assembly is both cheap to manufacture and reliable to use.
- In its first position the patient end of the needle cannula points straight forward along the centre axis of the needle assembly. In this position, the needle assembly is ready for use and the shield can slide parallel to the needle cannula.
- Once the needle cannula has been moved to its second position which usually follows use of the needle assembly, the needle cannula is moved to a second position wherein the needle cannula is not parallel aligned with the centre axis (x) and in which position the shield prevents exposure of the tip of the needle cannula (20) while the patient end of the needle cannula blocks the axial movement of the shield.
- Since the patient end and the non-patient end of the needle cannula follow each other, the non-patient end is also deflected. In its deflected position the sharp end is pushed against the skirt of the hub thereby rendering it impossible—or at least very difficult—to be injured by the sharp end of the non-patient end. The hub could alternatively be provided with a radial extension into which the non-patient end collapses.
- The needle cannula is preferably mounted, e.g. by gluing, to an attachment part which is connected to a bridging part suspended over the hub. The bridging part is firmly attached to the hub at one end while the other end is free-floating. The bridging part is preferably moulded as an integral part of the hub but could also be a separate part attached to the hub.
- This free floating end of the bridging portion is preferably supported by a part of the hub which can be moved out of engagement with the free floating end of the bridging part in which situation the bridge would collapse resulting in a deflection of the needle cannula.
- The part of the hub which supports the free floating end of the bridging portion is preferably a radially movable part of the hub. It can be embodied as a tooth or a cut-out in the skirt of the hub and only being proximally connected to the hub, or it can be embodied as an insert in the hub. The function is that it supports the free floating end of the bridging portion when the needle assembly is not attached to the injection device but is automatically shifted out of engagement with the free floating end once the needle assembly is attached to any injection device. However, the release part could also be a part that requires the user to actuate it.
- In order to enhance the collapse of the bridging part it is preferably provided with a film hinge or a similar mechanism that weakens the structure.
- To further enhance the collapse a spring is provided which urges the bridging part in the direction of the collapse which is preferably the proximal direction.
- In order to have the telescopically movable shield move into its covering position after an injection, a spring is provided which urges the shield in the distal direction. This spring is preferably provided between the shield and the bridging portion of the hub such that the same spring urges the shield in the distal direction and applies a pressure on the bridging portion enhancing the collapse once the free floating end is set free.
- Once the needle assembly is removed from the injection device the free floating end of the bridging structure of the hub is no longer supported which makes it collapse. Since the part of the bridging structure opposite the free floating part is secured to the hub, the bridge with its attachment part will tilt. The needle cannula which is secured to the attachment part will also tilt whereby the patient end of the needle cannula will be deflected away form the centre axis and the non-patient end will be deflected away in the opposite direction.
- The sharp end of the non-patient end will abut the inside wall of the skirt of the hub while the sharp part of the patient end will be positioned inside the shield thereby preventing axial movement of the shield.
- An “injection pen” is typically an injection apparatus having an oblong or elongated shape somewhat like a pen for writing. Although such pens usually have a tubular cross-section, they could easily have a different cross-section such as triangular, rectangular or square or any variation around these geometries.
- As used herein, the term “drug” is meant to encompass any drug-containing flowable medicine capable of being passed through a delivery means such as a hollow needle in a controlled manner, such as a liquid, solution, gel or fine suspension. Representative drugs includes pharmaceuticals such as peptides, proteins (e.g. insulin, insulin analogues and C-peptide), and hormones, biologically derived or active agents, hormonal and gene based agents, nutritional formulas and other substances in both solid (dispensed) or liquid form.
- Correspondingly, the term “subcutaneous” injection is meant to encompass any method of transcutaneous delivery to a subject.
- The term “Needle Cannula” is used to describe the actual conduit performing the penetration of the skin during injection. A needle cannula is usually made from a metallic material and connected to a hub to form a complete injection needle also often referred to as a “needle assembly”. A needle cannula could however also be made from a polymeric material or a glass material. The needle cannula is mounted in a “hub”, which also carries the connecting means for connecting the injection needle to an injection apparatus and is usually moulded from a suitable thermoplastic material. The “connection means” could as examples be a luer coupling, a bayonet coupling, a threaded connection or any combination thereof e.g. a combination as described in EP 1,536,854.
- “Cartridge” is the term used to describe the container containing the drug. Cartridges are usually made from glass but could also moulded from any suitable polymer. A cartridge or ampoule is preferably sealed at one end by a pierceable membrane which can be pierced e.g. by the non-patient end of a needle cannula. The opposite end is typically closed by a plunger or piston made from rubber or a suitable polymer. The plunger or piston can be slidable moved inside the cartridge. The space between the pierceable membrane and the movable plunger holds the drug which is pressed out as the plunger decreased the volume of the space holding the drug. However, any kind of container—rigid or flexible—can be used to contain the drug.
- All references, including publications, patent applications, and patents, cited herein are incorporated by reference in their entirety and to the same extent as if each reference were individually and specifically indicated to be incorporated by reference and were set forth in its entirety herein.
- All headings and sub-headings are used herein for convenience only and should not be constructed as limiting the invention in any way.
- The use of any and all examples, or exemplary language (e.g. such as) provided herein, is intended merely to better illuminate the invention and does not pose a limitation on the scope of the invention unless otherwise claimed. No language in the specification should be construed as indicating any non-claimed element as essential to the practice of the invention. The citation and incorporation of patent documents herein is done for convenience only and does not reflect any view of the validity, patentability, and/or enforceability of such patent documents.
- This invention includes all modifications and equivalents of the subject matter recited in the claims appended hereto as permitted by applicable law.
- The invention will be explained more fully below in connection with a preferred embodiment and with reference to the drawings in which:
-
FIG. 1 Show an exploded view of the tiltable needle assembly. -
FIG. 2 Show a cross sectional view of the tiltable needle assembly prior to mounting. -
FIG. 3 show a cross sectional view of the tiltable needle cannula in its locked position after removal from the injection pen. -
FIG. 4 Show a cross sectional view of the tiltable needle assembly mounted an injection pen. - The figures are schematic and simplified for clarity, and they just show details, which are essential to the understanding of the invention, while other details are left out. Throughout, the same reference numerals are used for identical or corresponding parts.
- When in the following terms as “upper” and “lower”, “right” and “left”, “horizontal” and “vertical”, “clockwise” and “counter clockwise” or similar relative expressions are used, these only refer to the appended figures and not to an actual situation of use. The shown figures are schematic representations for which reason the configuration of the different structures as well as there relative dimensions are intended to serve illustrative purposes only.
- In that context it may be convenient to define that the term “distal end” in the appended figures is meant to refer to the end of the needle cannula penetrating the patient whereas the term “proximal end” is meant to refer to the opposite end pointing away from the patient in a situation of use.
- The needle assembly disclosed in
FIG. 1 comprises aneedle cannula 20 which is glued to aneedle hub 1 by a drop ofglue 25. Theneedle cannula 20 comprises adistal part 21 for penetrating into a patient (the patient end) and aproximal part 22 for penetrating into a cartridge 31 (the non-patient end) contained in theinjection device 30 to which the needle assembly is attached. - Surrounding the
hub 1 is atubular housing 40 which is preferably glued or welded to the outside surface of thehub 1. Asafety shield 50 is axially movable inside thehousing 40 and is urged in the distal direction by aspring 60 provided between thehub 1 and theshield 50. - The
shield 50 is at its proximal end provided with arim 51 which engages an inwardly pointingedge 41 on thehousing 40 such that theshield 50 is contained within thehousing 40. - As disclosed in
FIGS. 2 and 3 thehub 1 comprises a number of inwardly pointingprotrusions 3 located on the inside surface of askirt 2 surrounding theproximal part 22 of theneedle cannula 20, such that the needle assembly can be attached to theinjection device 30 via a bayonet interface as described in EP 1,536,854. Such interface only requires the user to perform a relatively little rotation of the needle assembly relatively to theinjection device 30 in order to attach the needle assembly properly. - The
hub 1 further comprises abridge 10 which at one side is firmly attached to thehub 1 e.g. by being moulded as an integral part of thehub 1. At the other end, approximately 180 degrees opposite from the first side, thebridge 10 terminates in a free-floatingleg 11. - The
bridge 10 carries anattachment part 12 with a through-goingopening 13, in whichopening 13 theneedle cannula 20 is glued 25 to thebridge 10. Thebridge 10 further comprises a film-hinge 14 which is preferably moulded as an integral part of thebridge 10. Further thehub 1 and thebridge 10 is provided with atrack 15 which supports thespring 60. - The
skirt 2 of thehub 1 comprises arelease part 4 which is radially movable relatively to the remaining part of theskirt 2. Thisrelease part 4 supports the free-floatingleg 11 of thebridge 10 at its distal end as disclosed inFIG. 2 . -
FIG. 4 discloses the needle assembly attached to theinjection device 30 utilizing the bayonet interface. Theinjection device 30 supports thecartridge 31 holding the drug to be injected and is at its distal end provided with aneedle mount 32. Thisneedle mount 32 has a number of axial tracks for the bayonet coupling and can either be a part of theinjection device 30 or a separate part attached to thecartridge 31. - Once the needle assembly is attached to the
injection device 30, therelease part 4 is moved radially outwardly by theneedle mount 32. In this mode theinjection pen 30 is ready to perform the injection and the free-floatingleg 11 of thebridge 10 is supported by theneedle mount 32. - When a user performs an injection he or she simply pushes the
injection device 30 with the needle assembly attached against the surface of the skin whereby the skin moves theshield 50 in the proximal direction against the pressure of thespring 60. When the injection is over the user removes theinjection device 30 together with the needle assembly whereby thespring 60 moves theshield 50 in the distal direction. Thepatient end 21 of theneedle cannula 20 will at all time be out of the sight of the user. - When the user decides to remove the needle assembly from the
injection device 30 he or she uncouples the needle assembly as disclosed inFIG. 3 . Since the free-floatingleg 11 is now unsupported thespring 60 which is located on thebridge 10 pushes thebridge 10 in the proximal direction. The film-hinge 14 now bends to the pressure of thespring 60 and theentire bridge 10 including theattachment part 12 and theneedle cannula 20 tilts. - In this tilted position disclosed in
FIG. 3 , the non-patient end of the needle cannula lies against the inside surface of theskirt 2 and thepatient end 21 of theneedle cannula 20 blocks theshield 50 such that theshield 50 can not be moved axially. - Some preferred embodiments have been shown in the foregoing, but it should be stressed that the invention is not limited to these, but may be embodied in other ways within the subject matter defined in the following claims, e.g. could a needle assembly as herein described be delivered to the user in a rigid and sterile container which further could be shaped as a tool for assisting the user in mounting the needle assembly on to the injection device.
Claims (10)
1. A needle assembly for a drug delivery device comprising
A needle hub (1) attachable to the drug delivery device (30),
A needle cannula (20) secured to the hub (1) and having a patient end (21) and a non-patient end (22),
A telescopically movable shield (50) adapted to at least partially cover the patient-end (21) of the needle cannula (20),
Characterized in that, the needle cannula (20) has a first position in which the needle cannula (20) is substantial parallel aligned with a centre axis (X) of the needle assembly, and a second position in which the needle cannula (20) deflects from the first position and in which second position the patient end (21) of the needle cannula (20) engages the shield (50) whereby exposure of the patient end (21) of the needle cannula (20) is prevented.
2. A needle assembly for a drug delivery device according to claim 1 , in which the needle hub (1) comprises a bridge part (10) holding the needle cannula (20).
3. A needle assembly for a drug delivery device according to claim 2 , in which the bridge part (10) has a free-floating leg (11).
4. A needle assembly for a drug delivery device according to claim 3 , in which the free-floating leg (11) is supported by a release part (4).
5. A needle assembly for a drug delivery device according to claim 4 , in which the release part (4) is a radially movable part of the hub (1).
6. A needle assembly for a drug delivery device according to claim 5 , in which the bridge part (10) is provided with a film hinge (14).
7. A needle assembly for a drug delivery device according to claim 2 , in which a spring (60) is provided which applies a pressure on the bridge part (10) in a proximal direction.
8. A needle assembly for a drug delivery device according to claim 7 , in which the spring (60) is provided between the bridge part (10) and the shield (50).
9. A needle assembly for a drug delivery device according to claim 4 , in which the release part (4) is moved in a radial direction by a needle mount (32) of the injection device (30) to which the needle assembly is attached.
10. A needle assembly for a drug delivery device according to claim 9 , in which a non-patient end (22) of the needle cannula (20) abuts an inside surface of the needle hub (1) and a patent-end (21) of the needle cannula (20) blocks the axial movement of the shield (50) once the needle assembly has been removed from the injection device (30).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/139,420 US20120022461A1 (en) | 2008-12-15 | 2009-12-01 | Tiltable safety needle |
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08171631.8 | 2008-12-15 | ||
EP08171631 | 2008-12-15 | ||
US13828808P | 2008-12-17 | 2008-12-17 | |
US13/139,420 US20120022461A1 (en) | 2008-12-15 | 2009-12-01 | Tiltable safety needle |
PCT/EP2009/066130 WO2010079016A1 (en) | 2008-12-15 | 2009-12-01 | Tiltable safety needle |
Publications (1)
Publication Number | Publication Date |
---|---|
US20120022461A1 true US20120022461A1 (en) | 2012-01-26 |
Family
ID=40352246
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/139,420 Abandoned US20120022461A1 (en) | 2008-12-15 | 2009-12-01 | Tiltable safety needle |
Country Status (5)
Country | Link |
---|---|
US (1) | US20120022461A1 (en) |
EP (1) | EP2376152A1 (en) |
JP (1) | JP5743900B2 (en) |
CN (1) | CN102245236B (en) |
WO (1) | WO2010079016A1 (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20160249951A1 (en) * | 2014-02-21 | 2016-09-01 | Warren R. Hultquist | Skin care methods, systems, and devices |
US20170319316A1 (en) * | 2014-11-24 | 2017-11-09 | 4C Design Limited | Ligatures and use thereof |
IT201700059104A1 (en) * | 2017-05-30 | 2018-11-30 | Sol Millennium Swiss R&D Center Sa | SAFETY NEEDLE WITH CANNULA DEFORMATION FOR INJECTOR PEN |
US10406298B2 (en) | 2015-02-20 | 2019-09-10 | Novo Nordisk A/S | Needle unit for drug delivery device |
IT201900016202A1 (en) | 2019-09-12 | 2021-03-12 | Sol Millennium Swiss R&D Center Sa | "Improved Safety Needle" |
WO2022200802A1 (en) * | 2021-03-26 | 2022-09-29 | Tip-Top.Com Ltd | Needle safety assembly |
WO2022258991A1 (en) * | 2021-06-11 | 2022-12-15 | Tip-Top.Com Ltd | Improved needle safety assembly |
WO2023028296A1 (en) * | 2021-08-26 | 2023-03-02 | Deka Products Limited Partnership | Infusion set and inserter assembly apparatuses, systems, and methods |
WO2023223048A1 (en) * | 2022-05-20 | 2023-11-23 | Tip-Top.Com Ltd | A method of assembling a needle safety apparatus |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11007327B2 (en) | 2012-10-25 | 2021-05-18 | Novo Nordisk A/S | Pre-filled disposable injection device |
CN104338215B (en) * | 2014-11-04 | 2017-02-01 | 贝普医疗科技有限公司 | Disposable use safe self-destruction insulin needle |
ES2886024T3 (en) * | 2016-02-05 | 2021-12-16 | Hoffmann La Roche | Medical device for detecting at least one analyte in a body fluid |
RS64277B1 (en) | 2016-02-05 | 2023-07-31 | Hoffmann La Roche | Medical device for detecting at least one analyte in a body fluid |
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- 2009-12-01 CN CN200980150208.9A patent/CN102245236B/en not_active Expired - Fee Related
- 2009-12-01 WO PCT/EP2009/066130 patent/WO2010079016A1/en active Application Filing
- 2009-12-01 EP EP09764787A patent/EP2376152A1/en not_active Withdrawn
- 2009-12-01 US US13/139,420 patent/US20120022461A1/en not_active Abandoned
- 2009-12-01 JP JP2011540018A patent/JP5743900B2/en not_active Expired - Fee Related
Patent Citations (3)
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US4846808A (en) * | 1988-02-16 | 1989-07-11 | Habley Medical Technology Corporation | Safety syringe having a needle to be retracted and canted within a protective sleeve |
US5378240A (en) * | 1989-11-08 | 1995-01-03 | Curie; Napoleon | Syringe with retractable needle mount |
US7182734B2 (en) * | 2001-08-09 | 2007-02-27 | Becton, Dickinson And Company | Retracting needle safety device |
Cited By (16)
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---|---|---|---|---|
US20200237405A1 (en) * | 2014-02-21 | 2020-07-30 | Warren R. Hultquist | Skin care methods, systems, and devices |
US10492831B2 (en) | 2014-02-21 | 2019-12-03 | Warren R. Hultquist | Skin care methods, systems, and devices |
US11266443B2 (en) * | 2014-02-21 | 2022-03-08 | Warren R. Hultquist | Skin care methods, systems, and devices |
US10363067B2 (en) * | 2014-02-21 | 2019-07-30 | Warren R. Hultquist | Skin care methods, systems, and devices |
US20160249951A1 (en) * | 2014-02-21 | 2016-09-01 | Warren R. Hultquist | Skin care methods, systems, and devices |
US20170319316A1 (en) * | 2014-11-24 | 2017-11-09 | 4C Design Limited | Ligatures and use thereof |
US10406298B2 (en) | 2015-02-20 | 2019-09-10 | Novo Nordisk A/S | Needle unit for drug delivery device |
CN110691622A (en) * | 2017-05-30 | 2020-01-14 | 千禧光瑞士股份研发中心 | Safety needle with deformable cannula for injection pen |
WO2018220529A1 (en) * | 2017-05-30 | 2018-12-06 | Sol-Millenium Swiss R&D Center Sa | Safety needle with deformable cannula for injector pen |
US11097068B2 (en) | 2017-05-30 | 2021-08-24 | Sol-Millennium Swiss R&D Center Sa | Safety needle with deformable cannula for injector pen |
IT201700059104A1 (en) * | 2017-05-30 | 2018-11-30 | Sol Millennium Swiss R&D Center Sa | SAFETY NEEDLE WITH CANNULA DEFORMATION FOR INJECTOR PEN |
IT201900016202A1 (en) | 2019-09-12 | 2021-03-12 | Sol Millennium Swiss R&D Center Sa | "Improved Safety Needle" |
WO2022200802A1 (en) * | 2021-03-26 | 2022-09-29 | Tip-Top.Com Ltd | Needle safety assembly |
WO2022258991A1 (en) * | 2021-06-11 | 2022-12-15 | Tip-Top.Com Ltd | Improved needle safety assembly |
WO2023028296A1 (en) * | 2021-08-26 | 2023-03-02 | Deka Products Limited Partnership | Infusion set and inserter assembly apparatuses, systems, and methods |
WO2023223048A1 (en) * | 2022-05-20 | 2023-11-23 | Tip-Top.Com Ltd | A method of assembling a needle safety apparatus |
Also Published As
Publication number | Publication date |
---|---|
CN102245236B (en) | 2014-02-26 |
WO2010079016A1 (en) | 2010-07-15 |
JP2012511942A (en) | 2012-05-31 |
EP2376152A1 (en) | 2011-10-19 |
JP5743900B2 (en) | 2015-07-01 |
CN102245236A (en) | 2011-11-16 |
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Owner name: NOVO NORDISK A/S, DENMARK Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SCHUBERT, JAKOB BOGH;GLEJBOL, KRISTIAN;VON BULOW, MARTIN;SIGNING DATES FROM 20110902 TO 20111012;REEL/FRAME:027162/0219 |
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STCB | Information on status: application discontinuation |
Free format text: EXPRESSLY ABANDONED -- DURING EXAMINATION |